塑料制品一次性杯子制品重量核算方法
面积×厚度×密度=制品重量
面积=半径*半径*3.14
PP密度:0.91g/cm3
PS密度:1.054g/cm3
PET密度:1.4g/cm3
例如:杯子Φ90,用1.2mm片材的片材生产,重子重量将是多少?
0.9÷2=0.45(半径)*0.45*3.14*1.2(厚度)*0.91(密度)=6.94g(理论值)
缩水比:
PP: 1.02
PS: 1.005
PET: 1.005
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Product weight calculation method
Area =r*r *3.14
PP density:0.91g/cm3
PS density:1.054g/cm3
PET density:1.4g/cm3
example:cup diameter Φ90,thickness of sheet is 1.2mm,what is the weight of the cup?
0.9÷2=0.45(radius)*0.45*3.14*1.2(thickness)*0.91(density)=6.94g(theoretical value)
Shrink ratio:
PP: 1.02
PS: 1.005
PET: 1.005